Updates per review comments #3659

Job	Run time
Labs (ubuntu-latest)	55s
Labs-Slides	1m 8s
Contrib scripts check	1m 15s
Python scripts black lint check	13s
List-Courses	4s
Slides (ada_essentials/standard_course.txt)	3m 46s
Slides (gnat_studio)	2m 18s
Slides (gnatsas)	4m 50s
Slides (spark_essentials)	6m 27s
Slides (gnatdas)	4m 19s
Slides (rust_essentials)	8m 36s
Slides (misc_tools)	2m 7s
Slides (toolchain)	1m 54s
Slides (spark_essentials/standard_course.txt)	2m 12s
Slides (gnatdas/standard_course.txt)	2m 7s
Slides (toolchain/gnat_toolchain.txt)	1m 52s
Slides (rust_essentials/comprehensive_course.txt)	2m 44s
Slides (gnat_project_facility/standard_course.txt)	2m 44s
Slides (gnat_studio/course.txt)	1m 48s
Slides (ada_essentials)	14m 53s
Slides (static_analysis_via_compiler)	1m 59s
Slides (gnatsas/standard_course.txt)	2m 14s
Slides (rust_essentials/standard_course.txt)	1m 50s
Slides (gnat_project_facility)	2m 58s
Slides (advanced_exception_analysis)	1m 46s
Slides (ada_essentials/advanced.txt)	3m 20s
	1h 20m 19s

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